Sign post



FIG. 1 is front perspective view of a sign post;

FIG. 2 is a front elevational view of the sign post in which the opposing rear elevational view is a mirror image of the front elevational view shown, the rectangular shape shown in broken line representing a sign supported on the sign post which forms no part of the claimed design;

FIG. 3 is a top plan view of the sign post;

FIG. 4 is a left side elevational view of the sign post; and,

FIG. 5 is a right side elevational view of the sign post.

The dot-dash broken lines represent the boundaries of the claim and form no part thereof. The evenly spaced broken lines showing the lower portion of the sign post and rectangular shape form no part of the claimed design. 

CLAIM The ornamental design for a sign post, as shown and described. 